Comb signal generator and method of providing a phase and amplitude reference
AssigneeRohde & Schwarz GmbH & Co. KG
InventorsPaul Gareth Lloyd, Matthias Ruengeler
Life of this patent
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Abstract
A comb signal generator that includes at least two signal sources that each provide a signal, wherein the signals provided by the at least two signal sources are shaped similarly. The com signal generator also has a combining circuit connected with the at least two signal sources, wherein the combining circuit is configured to combine the signals provided by the at least two signal sources, thereby generating a combined signal. Further, the com signal generator includes a clipping circuit connected with the combining circuit, wherein the clipping circuit is configured to receive and process the combined signal, thereby generating a comb signal. Further, a method of providing a phase and amplitude reference is described.
Claims18
A comb signal generator, comprising:
- at least two signal sources that each provide a signal, wherein the signals provided by the at least two signal sources are shaped similarly;
- a combining circuit connected with the at least two signal sources, wherein the combining circuit is configured to combine the signals provided by the at least two signal sources, thereby generating a combined signal;
- and
- a clipping circuit connected with the combining circuit, wherein the clipping circuit is configured to receive and process the combined signal, thereby removing certain portions of the combined signal forwarded to the clipping circuit and generating a comb signal that has several discrete frequency lines.
A method of providing a phase and amplitude reference for a device to be calibrated, the method comprising:
- generating, by using a first signal source, a first signal with a first frequency;
- generating, by using a second signal source, a second signal with a second frequency that is different from the first frequency;
- feeding the first signal and the second signal into a combining circuit;
- combining the first signal and the second signal passively, thereby generating a combined signal that is a two-tone signal;
- and
- feeding a clipping circuit with the two-tone signal, which processes the two-tone signal, wherein the respective amplitudes of the two tones are such that the clipping circuit is forced to clip as much as possible of respective signal components, thereby shaping the combined signal during signal processing by the clipping circuit while removing certain portions of the combined signal forwarded to the clipping circuit and generating a comb signal.
A comb signal generator, comprising:
- at least two signal sources that each provide a signal, wherein the signals provided by the at least two signal sources are shaped similarly, wherein the signals provided by the at least two signal sources are sinusoidal signals that have different frequencies;
- a combining circuit connected with the at least two signal sources, wherein the combining circuit is configured to combine the signals provided by the at least two signal sources, thereby generating a combined multiple tone signal;
- and
- a clipping circuit connected with the combining circuit, wherein the clipping circuit is configured to receive and process the combined multiple tone signal, wherein the clipping circuit is configured to shape the respective waveform of the combined multiple tone signal while altering the spectral components of the combined multiple tone signal, thereby generating a comb signal.
Dependencies are inferred from the claim text.